TABLE 2.
Characteristics of sleep variables across systolic BPV tertiles
| Variable | Systolic BPV Tertiles | |||||
|---|---|---|---|---|---|---|
| All | 1 | 2 | 3 | p‐Value | ||
| Total Sleep Time (min), mean (SD) | 339.50 (88.20) | 344.69 (84.75) | 342.05 (85.49) | 331.87 (93.57) | <.001 | |
| AHI, mean (SD) | 16.50 (18.00) | 15.11 (16.75) | 16.16 (17.14) | 18.21 (19.81) | <.001 | |
| AHI Categories, N (%) | ||||||
| <5 | 950 (26.65%) | 344 (29.40%) | 316 (6.38%) | 290 (24.23%) | .009 | |
| 5‐14.9 | 1,238 (34.73%) | 419 (35.81%) | 412 (34.39%) | 407 (34.00%) | ||
| 15‐29.9 | 843 (23.65%) | 256 (21.88%) | 295 (24.62%) | 292 (24.39%) | ||
| ≥30 | 534 (14.98%) | 151 (12.91%) | 175 (14.61%) | 208 (17.38%) | ||
| REM Percentage, mean (SD) | 16.57 (9.06) | 17.43 (9.08) | 16.67 (9.12) | 15.61 (8.88) | <.001 | |
| NREM Percentage, mean (SD) | ||||||
| N1 | 9.46 (10.28) | 8.75 (8.88) | 9.35 (9.93) | 10.27 (11.74) | .001 | |
| N2 | 63.12 (13.31) | 62.81 (12.56) | 62.89 (13.48) | 63.66 (13.84) | .228 | |
| N3 | 12.34 (14.22) | 12.90 (14.11) | 12.29 (13.4) | 11.85 (15.08) | .194 | |
| REM Duration (min), mean (SD) | 58.94 (37.03) | 62.99 (38.42) | 59.13 (36.52) | 54.81 (35.72) | <.001 | |
| NREM Duration (min), mean (SD) | ||||||
| N1 | 28.41 (25.87) | 27.04 (23.35) | 28.71 (26.82) | 29.47 (27.18) | .066 | |
| N2 | 214.88 (71.40) | 216.69 (66.57) | 215.64 (71.20) | 212.35 (76.00) | .302 | |
| N3 | 42.90 (52.78) | 45.24 (52.4) | 42.93 (48.04) | 40.58 (57.42) | .099 | |
Abbreviations: AHI, apnea–hypopnea index; BPV, blood pressure variability; NREM, non‐rapid eye movement; REM, rapid eye movement; SD, standard deviation.